Sideboard

Prismatic Lens

Beacon of Immortality

Double target player's life total. Shuffle Beacon of Immortality into its owner's library.

Zealous Persecution

Until end of turn, creatures you control get +1/+1 and creatures your opponents control get -1/-1.

Mortify

Destroy target creature or enchantment.

Child of Night

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Vow of Duty

Necropolis Regent

Flying Whenever a creature you control deals combat damage to a player, put that many +1/+1 counters on it.

Vampire Interloper

Flying Vampire Interloper can't block.

Tainted Field

Shielded by Faith

Vampire Nighthawk

Flying Deathtouch (Creatures dealt damage by this creature are destroyed. You can divide this creature's combat damage among any of the creatures blocking or blocked by it.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Day of Judgment

Destroy all creatures.

Veteran's Reflexes

Target creature gets +1/+1 until end of turn. Untap that creature.

Urge to Feed

Target creature gets -3/-3 until end of turn. You may tap any number of untapped Vampire creatures you control. If you do, put a +1/+1 counter on each of those Vampires.